40% Bronze Filled PTFE Tubes Materials: Bronze + PTFE (Teflon) Method: Press Molding Shape: by Drawing Bronze Filled PTFE (Teflon) Sleeves / Tubes, Bronze percentage can be made according to customers' request, for example 5% / 20% / 40%, etc.Bronze Filled PTFE (Teflon) Sleeves / Tubes, are manufactured by molding method with filled ptfe resin. Filled PTFE resin is manufactured by compounding ...